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无论是设计、工艺、还是装配,尺寸链的计算是我们经常要碰到的问题。有工艺尺寸链,设计尺寸链和装配尺寸链。本文以工艺尺寸链为例。尺寸链计算一般都是列尺寸链方程求解。亦即:(1)封闭环的名义尺寸等于增环的名义尺寸之和减去减环的名义尺寸之和;(2)封闭环的上偏差等于增环的上偏差之和减去减环的下偏差之和;(3)封闭环的下偏差等于增环的下偏差之和减去减环的上偏差之和。
Whether it is the design, technology, or assembly, the calculation of the size chain is a problem we often have to encounter. There are craft size chains, design size chains and assembly size chains. In this paper, the size of the process chain, for example. Dimension chain calculations are generally column size chain equation solution. That is: (1) The nominal size of the closed loop is equal to the sum of the nominal sizes of the plus loops minus the nominal sizes of the subtransses; (2) The upper deviation of the closed loop is equal to the sum of the upper deviations of the plus loops minus the minus And the sum of the lower deviation; (3) The lower deviation of the closed ring is equal to the sum of the lower deviation of the increased ring minus the upper deviation of the reduction ring.